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2. Wireless power transfer - Wikipedia

   en.wikipedia.org/wiki/Wireless_power_transfer

   Inductive charging pad for a smartphone as an example of near-field wireless transfer. When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Generic block diagram of a wireless power system

3. Inductive charging - Wikipedia

   en.wikipedia.org/wiki/Inductive_charging

   The primary coil in the charger induces a current in the secondary coil in the device being charged. Inductive charging (also known as wireless charging or cordless charging) is a type of wireless power transfer. It uses electromagnetic induction to provide electricity to portable devices. Inductive charging is also used in vehicles, power ...

4. Qi (standard) - Wikipedia

   en.wikipedia.org/wiki/Qi_(standard)

   Qi (/ tʃ iː / CHEE) is an open standard for inductive charging developed by the Wireless Power Consortium.It allows compatible devices, such as smartphones, to receive power when placed on a Qi charger, which can be effective over distances up to 4 cm (1.6 in). [1]

5. Common external power supply - Wikipedia

   en.wikipedia.org/wiki/Common_external_power_supply

   Incompatibility of chargers for mobile phones is a major environmental problem and an inconvenience for users across the EU. Currently specific chargers are sold together with specific mobile phones. A user who wants to change his/her mobile phone must usually acquire a new charger and dispose the current one, even if this is in perfect condition.

6. Universal charger - Wikipedia

   en.wikipedia.org/wiki/Universal_charger

   Universal charger or common charger refers to various projects to standardize the connectors of power supplies, particularly for battery-powered devices. Since the publication of the USB Power Delivery standard in 2012, and the USB-C connector in 2014, USB-C has become a widespread standard for charging mobile phones.

7. Comparison of open-source mobile phones - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_open-source...

   [2] [5] More secure, better-featured free replacement exists, but can't ship due to regulatory threats. [4] proprietary Wi-Fi/Bluetooth firmware, [5] in /lib/firmware. [6] Efforts to replace it are in beta, but may never be legal to ship, [citation needed] same as original PinePhone. [1] open-source boot software [2] proprietary schematics ...

8. List of open-source mobile phones - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source_mobile...

   There are also devices using Ubuntu Touch, Droidian and FuriOs which are using GNU/Linux and Android hardware adaptation layer Halium. [11] Phones natively running these are included. There are multiple projects to implement mainline Linux on mobile phones. Mobian is an open-source project focusing on Debian GNU/Linux on mobile devices.

9. Conductive charging - Wikipedia

   en.wikipedia.org/wiki/Conductive_charging

   Contact-based accessories may include changeable backs for cellular phones, special sleeves, or attachable clips. The charging bases are designed to identify a compatible receiver and only power up when it's detected to avoid risk of electrocution. [2] Open Dots is a specification for such charging pads and receivers using contacts instead of ...